US3581242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable polarizer for microwave systems
Assignee: United States Department of the Air Force
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Filing: 1969-10-20
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Granted: 1971-05-25
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Expires: 1989-10-20
Abstract
Abstract A dual-channel receiver polarizer microwave system including a pair of waveguide systems each having adjustable phasers mounted in parallel and in series and connected to a source of input signals and a multimode transducer for transmitting and the transducer and a receiver for receiving.
Inventors
- 👤 Louis J Lavedan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:00
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/024; G01S7/41; G01S7/411
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A variable polarizer for microwave systems comprising: a first and second waveguide channel; coupling means for interconnecting the first and second waveguide channels; a plurality of adjustable phase shifting elements connected in parallel and in series in said first and second waveguide channels; a source of input signal; signal output means; a first receiver means connected to the first waveguide channel; a first duplexer means connected between said signal output means and said first receiver means; a second receiver means connected to the second waveguide channel; and a second duplexer means connected between the said signal output means and said second receiver means whereby microwave signals will be variably polarized in the first and second channels.
Claim 2
Dependent Claim
116 words
A variable polarizer for microwave systems comprising: a first and second waveguide channel; coupling means for interconnecting the first and second waveguide channels; a plurality of adjustable phase shifting elements connected in parallel and in series in said first and second waveguide channels; a source of input signal; signal output means; a first receiver means connected to the first waveguide channel; a first duplexer means connected between said signal output means and said first receiver means; a second receiver means connected to the second waveguide channel; and a second duplexer means connected between the said signal output means and said second receiver means whereby microwave signals will be variably polarized in the first and second channels.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |